在Raspberry Pi 3b＆＃x2B上安装OpenCV关键错误：OpenCV-Python

Question

我一直在尝试使用pip3 install在Raspberry Pi 3b+上安装OpENCV。但这总是会遇到这样的错误。出于某种原因，它确实设法加载了50％以上，但最终再次发生错误。

Traceback (most recent call last):
  File "/usr/share/python-wheels/resolvelib-0.5.4-py2.py3-none-any.whl/resolvelib/resolvers.py", line 171, in _merge_into_criterion
    crit = self.state.criteria[name]
KeyError: 'opencv-python'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/share/python-wheels/urllib3-1.26.5-py2.py3-none-any.whl/urllib3/response.py", line 438, in _error_catcher
    yield
  File "/usr/share/python-wheels/urllib3-1.26.5-py2.py3-none-any.whl/urllib3/response.py", line 519, in read
    data = self._fp.read(amt) if not fp_closed else b""
  File "/usr/share/python-wheels/CacheControl-0.12.6-py2.py3-none-any.whl/cachecontrol/filewrapper.py", line 62, in read
    data = self.__fp.read(amt)
  File "/usr/lib/python3.9/http/client.py", line 458, in read
    n = self.readinto(b)
  File "/usr/lib/python3.9/http/client.py", line 502, in readinto
    n = self.fp.readinto(b)
  File "/usr/lib/python3.9/socket.py", line 704, in readinto
    return self._sock.recv_into(b)
  File "/usr/lib/python3.9/ssl.py", line 1241, in recv_into
    return self.read(nbytes, buffer)
  File "/usr/lib/python3.9/ssl.py", line 1099, in read
    return self._sslobj.read(len, buffer)
socket.timeout: The read operation timed out.

的另一行发生了另一个例外，如上所述，但以一束URL结尾，

urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='www.piwheels.org', port=443): Read timed out.

我希望您能帮助我